Ball End Mill, Grade General Purpose, List Number 227, Ball Nose End Mill Style, End Mill Material Carbide, Dimension Type Fractional Inch, Milling Diameter 1/4 In., Single End, Number of Flutes 2, Length of Cut 1-1/2 In., End Mill Cutting Type Center, Overall Length 6 In., Finish Bright, Shank Type Straight, Shank Dia. 1/4 In., Cutting Direction Right Hand, Helix Angle 30 Degrees